2403682

Information

• Patent Grant
• 2403682

• References
• Source

• Patent Number

  2,403,682

• Date Filed

  Not available

• Date Issued

  Tuesday, July 9, 1946
  78 years ago

• CPC

  • H04L25/202 - using mechanical devices
  • H04L9/38 - Encryption being effected by mechanical apparatus

• US Classifications

  • 178 - Telegraphy